/* Base Reset & Box Sizing */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f9fafb; /* bg-gray-50 */
    color: #374151;
    transition: background-color 0.2s, color 0.2s;
}

a {
    color: inherit;
    text-decoration: inherit;
}

img, svg {
    display: block;
    max-width: 100%;
}

button {
    font-family: inherit;
    font-size: 100%;
    line-height: inherit;
    color: inherit;
    background-color: transparent;
    border: none;
    cursor: pointer;
}

/* Dark Mode Base */
.dark body {
    background-color: #111827; /* bg-gray-900 */
    color: #e5e7eb;
}

/* Container */
.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 640px) {
    .container { max-width: 640px; }
}
@media (min-width: 768px) {
    .container { max-width: 768px; }
}
@media (min-width: 1024px) {
    .container { max-width: 1024px; }
}
@media (min-width: 1280px) {
    .container { max-width: 1280px; }
}

/* Spacing Utilities */
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }

.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.p-6 { padding: 1.5rem; }
.pt-8 { padding-top: 2rem; }

/* Sizing */
.w-6 { width: 1.5rem; }
.h-6 { height: 1.5rem; }
.h-48 { height: 12rem; }
.w-full { width: 100%; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-6xl { max-width: 72rem; }

/* Flexbox */
.flex { display: flex; }
.inline-block { display: inline-block; }
.hidden { display: none; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

/* Grid */
.grid { display: grid; }
@media (min-width: 768px) {
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* Typography */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-6xl { font-size: 3.75rem; line-height: 1; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-center { text-align: center; }
.leading-relaxed { line-height: 1.625; }

/* Colors - Text */
.text-white { color: #ffffff; }
.text-gray-300 { color: #d1d5db; }
.text-gray-600 { color: #4b5563; }
.text-gray-800 { color: #1f2937; }
.text-purple-100 { color: #f3e8ff; }
.text-purple-600 { color: #9333ea; }
.text-purple-800 { color: #6b21a8; }
.text-orange-800 { color: #9a3412; }
.text-blue-800 { color: #1e40af; }

/* Dark mode text colors */
.dark .dark\:text-gray-100 { color: #f3f4f6; }
.dark .dark\:text-gray-300 { color: #d1d5db; }
.dark .dark\:text-purple-200 { color: #e9d5ff; }
.dark .dark\:text-orange-200 { color: #fed7aa; }
.dark .dark\:text-blue-200 { color: #bfdbfe; }

/* Colors - Background */
.bg-white { background-color: #ffffff; }
.bg-gray-50 { background-color: #f9fafb; }
.bg-gray-800 { background-color: #1f2937; }
.bg-blue-500 { background-color: #3b82f6; }
.bg-orange-500 { background-color: #f97316; }
.bg-purple-500 { background-color: #a855f7; }
.bg-orange-100 { background-color: #ffedd5; }
.bg-blue-100 { background-color: #dbeafe; }
.bg-purple-100 { background-color: #f3e8ff; }

/* Dark mode backgrounds */
.dark .dark\:bg-gray-800 { background-color: #1f2937; }
.dark .dark\:bg-gray-900 { background-color: #111827; }
.dark .dark\:bg-gray-950 { background-color: #030712; }
.dark .dark\:bg-orange-900 { background-color: #7c2d12; }
.dark .dark\:bg-blue-900 { background-color: #1e3a8a; }
.dark .dark\:bg-purple-900 { background-color: #581c87; }

/* Gradients */
.gradient-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.bg-gradient-to-br {
    background-image: linear-gradient(to bottom right, var(--tw-gradient-stops));
}

.from-orange-500 { --tw-gradient-from: #f97316; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, transparent); }
.to-red-500 { --tw-gradient-to: #ef4444; }
.from-blue-500 { --tw-gradient-from: #3b82f6; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, transparent); }
.to-indigo-600 { --tw-gradient-to: #4f46e5; }
.from-purple-500 { --tw-gradient-from: #a855f7; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, transparent); }
.to-pink-500 { --tw-gradient-to: #ec4899; }

/* Border & Rounded */
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.border-t { border-top-width: 1px; border-top-style: solid; }
.border-gray-700 { border-color: #374151; }

/* Shadow */
.shadow-sm { box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }

/* Overflow */
.overflow-hidden { overflow: hidden; }

/* Transitions */
.transition {
    transition-property: color, background-color, border-color, text-decoration-color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.transition-colors {
    transition-property: color, background-color, border-color, text-decoration-color, fill, stroke;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

/* Hover States */
.hover\:bg-gray-100:hover { background-color: #f3f4f6; }
.hover\:bg-blue-600:hover { background-color: #2563eb; }
.hover\:bg-orange-600:hover { background-color: #ea580c; }
.hover\:bg-purple-600:hover { background-color: #9333ea; }
.hover\:text-white:hover { color: #ffffff; }
.hover\:text-gray-800:hover { color: #1f2937; }
.hover\:shadow-2xl:hover { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }

.dark .dark\:hover\:text-gray-100:hover { color: #f3f4f6; }

/* Spacing Utilities */
.space-y-2 > * + * { margin-top: 0.5rem; }

/* Theme Toggle Button */
.theme-toggle {
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    transition: background-color 0.2s;
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.dark .theme-toggle {
    background-color: rgba(255, 255, 255, 0.05);
}

.dark .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* SVG icon visibility for theme toggle */
.dark .dark\:hidden { display: none; }
.dark .dark\:block { display: block; }

/* Content Prose Styling */
.content-prose {
    color: #374151;
    line-height: 1.75;
}

.content-prose h1 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-top: 0;
    margin-bottom: 1.5rem;
    color: #111827;
    line-height: 1.2;
}

.content-prose h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: #1f2937;
    line-height: 1.3;
}

.content-prose h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #374151;
}

.content-prose p {
    margin-bottom: 1.5rem;
}

.content-prose ul, .content-prose ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.content-prose ul {
    list-style-type: disc;
}

.content-prose ul ul {
    list-style-type: circle;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.content-prose ol {
    list-style-type: decimal;
}

.content-prose li {
    margin-bottom: 0.5rem;
    padding-left: 0.25rem;
}

.content-prose strong {
    font-weight: 600;
    color: #111827;
}

.content-prose a {
    color: #2563eb;
    text-decoration: underline;
}

.content-prose a:hover {
    color: #1d4ed8;
}

.content-prose code {
    background-color: #f3f4f6;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.content-prose pre {
    background-color: #1f2937;
    color: #f9fafb;
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.content-prose pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
}

.content-prose hr {
    margin: 3rem 0;
    border-color: #e5e7eb;
}

.content-prose blockquote {
    border-left: 4px solid #e5e7eb;
    padding-left: 1rem;
    font-style: italic;
    color: #6b7280;
    margin: 1.5rem 0;
}

/* Dark mode prose */
.dark .content-prose {
    color: #d1d5db;
}

.dark .content-prose h1 {
    color: #f9fafb;
}

.dark .content-prose h2 {
    color: #f3f4f6;
}

.dark .content-prose h3 {
    color: #e5e7eb;
}

.dark .content-prose strong {
    color: #f9fafb;
}

.dark .content-prose a {
    color: #60a5fa;
}

.dark .content-prose a:hover {
    color: #93c5fd;
}

.dark .content-prose code {
    background-color: #1f2937;
    color: #e5e7eb;
}

.dark .content-prose pre {
    background-color: #0f172a;
    color: #f9fafb;
}

.dark .content-prose hr {
    border-color: #374151;
}

.dark .content-prose blockquote {
    border-color: #4b5563;
    color: #9ca3af;
}